KR101918734B1 - Method and System for Providing Mobile Broadcast Service, Controller and Driving Method Thereof, and Computer Readable Medium for Recording Program - Google Patents

Abstract

Embodiments of the present invention relate to a system and method for a mobile broadcast service, a method of operating a controller and a controller, and a computer-readable medium recording a program. A system for a mobile broadcast service according to an aspect of the present invention includes a content server for providing data and service information related to at least one mobile service of a multicast and broadcast service (MBS) A node device for reserving a Dedicated Wireless Channel for transmitting data according to the request to the user requesting the mobile service and transmitting the multicast data using the dedicated wireless channel; Performs data tunneling for connection of the MBS with the node device, controls data synchronization of the node device in a service zone in which the MBS is performed, A gateway for assigning wireless channel-related parameters for transmitting and requesting to set or cancel a wireless channel between the node device and the user; And managing the at least one of a group of the node device and the user and a profile of the service, and distributing the data and the service information from the content server to the gateway And a controller for controlling the motor.

Description

TECHNICAL FIELD [0001] The present invention relates to a system and a method for a mobile broadcasting service, a method of driving a controller and a controller, a computer-readable medium storing a program, and a computer readable medium therefor,

Embodiments of the present invention relate to a system and method for a mobile broadcast service, a method of driving a controller and a controller, and a computer-readable medium on which a program is recorded. More specifically, for example, in a mobile communication system providing a multicast and broadcast service (MBS), when creating a multicast service area such as an MBS zone, only an access node having a multicast service user Multicast service area by creating a multicast service area, and the access node without a multicast user is excluded from the multicast service area again, thereby generating a multicast service area dynamically, thereby providing a multicast service such as a mobile broadcast service A system and method for a mobile broadcasting service to be provided, a method of driving a controller and a controller, and a computer-readable medium on which a program is recorded.

Mobile broadcasting service is one of representative mobile communication services. The mobile broadcasting service may be a unicast system in which a broadcasting server and a subscriber or a terminal are connected in a 1: 1 manner, or a multicast / broadcast system in which a broadcasting server and a subscriber are connected by 1: N.

Compared with wired communication service, communication service is very expensive compared to wired communication service because the amount of resources allocated to subscribers is small in mobile communication service. Therefore, in order to transmit the same contents to a plurality of users in a mobile communication system, it is preferable to use MBS (Multicast and Broadcast Service) which can transmit broadcast contents to one user as one resource.

To this end, standardization standards such as IEEE802.16e, IEEE802.16m, 3GPP / LTE and WiMAX Forum are used in MBS, Enhanced-MBS (MBS), Multicast Broadcast Multimedia Service (MBMS) ), E-MBMS (Enhanced-MBMS), and MCBCS (MultiCast BroadCast Service). In IEEE802.16e or IEEE802.16m, a plurality of base stations are organized into one broadcast service area, and then, in the broadcast service area, all base stations make an MBS standard for transmitting broadcast contents to terminals with the same radio resource, Is defined as an MBS zone or an E-MBS zone. 1 illustrates an MBS zone in IEEE 802.16e or IEEE 802.16m.

Also, in MBS, all users in a cell must be able to receive service data. Therefore, the base station providing the MBS must generate the MBS data signal by taking into consideration even the user who is in a position difficult to properly receive the signal, such as the edge of the cell. As a result, it is difficult to provide the MBS with the same quality as the unicast service. However, in order to solve such a problem, standard specifications define a method for improving the reception quality of MBS using macro diversity in SFN environment. The effect of macro diversity is that the neighbor base stations The greater the number, the better.

In this fixed type MBS environment, it is very difficult to construct an MBS zone that is suitable for a service request of a moving user. Especially, in a fixed type MBS environment, access nodes or base stations that do not have an MBS user always have to allocate radio resources for MBS. In addition, in the case of a single-BS MBS forming an MBS zone with only one base station defined in the IEEE 802.16e standard, the radio resources can be used most efficiently, but the macro-diversity effect can not be obtained, There is a drawback that the quality of the service is deteriorated. Therefore, there is a need for a new method for increasing the quality of MBS while reducing the amount of radio resources used by the base station for MBS.

In the embodiment of the present invention, an MBS zone is formed only in a base station that has a user's MBS request. For example, when there is a MBS request from a base station, if there is an MBS zone already providing the MBS, The MBS zone is included in the MBS zone. On the contrary, when there is no more user using the MBS in the MBS zone, the base station is excluded from the MBS zone. A system and a method for a mobile broadcasting service capable of dynamically forming an MBS zone by adding or excluding MBS zones to the MBS zone, a method of driving the controller and the controller, and a computer readable medium recording the program.

A system for a mobile broadcast service according to an aspect of the present invention includes a content server for providing data and service information related to at least one mobile service of a multicast and broadcast service (MBS) A node device for reserving a Dedicated Wireless Channel for transmitting data according to the request to the user requesting the mobile service and transmitting the multicast data using the dedicated wireless channel; Performs data tunneling for connection of the MBS with the node device, controls data synchronization of the node device in a service zone in which the MBS is performed, A gateway for assigning wireless channel-related parameters for transmitting and requesting to set or cancel a wireless channel between the node device and the user; And managing the at least one of a group of the node device and the user and a profile of the service, and distributing the data and the service information from the content server to the gateway And a controller for controlling the motor.

According to another aspect of the present invention, a controller is connected to a mobile communication network to determine whether a request service is active (Active) with respect to a first terminal and a second terminal requesting a mobile service, An activation determination unit for determining whether the mobile terminal is already active in a mobile service transmission zone and is operating in the same service area as the first terminal; The first terminal generates a first service area for the first terminal if the request for the first terminal is not activated as a result of the determination of the activation determining unit and the second terminal is operating in the same service area as the first terminal A service zone generating unit for expanding the first service area to generate a second service area; And a path setting unit for setting a data path for the first node device and the second node device and the mobile service.

According to another aspect of the present invention, a method for a mobile broadcast service includes a node device, a gateway, a controller, and a content server for processing data and service information related to at least one mobile service of a multicast and broadcast service (MBS) Wherein the node device reserves a dedicated radio channel for delivering data according to the request to a user requesting the mobile service and transmits the multicast data using the dedicated radio channel Transmitting; Wherein the gateway performs data tunneling for connection of the MBS with the node device, controls data synchronization of the node device in the service zone in which the MBS is performed, Assigning a parameter and requesting establishment or release of a wireless channel between the node device and the user; And the controller manages at least one of a service connection with the gateway, a group of the node device and a profile of the user and the service, and distributes the data and the service information from the content server to the gateway The method comprising the steps of:

According to another aspect of the present invention, a method for a mobile broadcast service includes a node device, a gateway, a controller, and a content server for processing data and service information related to at least one mobile service of a multicast and broadcast service (MBS) Wherein the controller is configured to receive the request from a user requesting to join or leave the mobile service and to create, change, maintain or delete a service zone in which the MBS is performed in response to the request, Determining whether to join or leave the node device; The controller performs a tree setup or release for the distribution of the gateway and the MBS, and notifies the gateway of creation, modification, maintenance, or deletion of the service zone; The gateway transmits a synchronization rule related to the MBS to the node device, performs a tree setup or release for distribution of the node device and the MBS, and registers or releases a data path to the node device, Allocating or releasing a channel resource, requesting connection or disconnection of a wireless channel between the node device and the user, and registering or releasing the data path and receiving a response to allocation or release of the channel resource; The node device performing the channel assignment or release for the MBS, requesting the user terminal to establish or cancel a channel connection, and receiving a response to the channel connection setup or release request; And the controller relaying and delivering the data provided from the content server to the terminal.

According to another aspect of the present invention, a method for a mobile broadcast service includes a node device, a gateway, a controller, and a content server for processing data and service information related to at least one mobile service of a multicast and broadcast service (MBS) Wherein the controller generates a first service zone (ZONE 1) based on a determination rule upon receiving a request for the MBS from the first terminal, Sending a notification of the creation to the gateway; The gateway distributing a synchronization rule to the first node device upon receiving the notification of creation of the first service area and accessing the first node device for transmission of the data; And when the first node device receives the synchronization rule, reserving a wireless link according to the synchronization rule and accessing the gateway for reception of the data.

According to another aspect of the present invention, there is provided a method of driving a controller, the method comprising: determining whether a request service is active (Active) with respect to first and second terminals requesting a mobile service by accessing a mobile communication network; Further determining whether the service is already active in a mobile service transmission zone and is operating in the same service area as the first terminal; If it is determined that the request service for the first terminal is not activated, a first service area is created in the first terminal. If the second terminal is operating in the same service area as the first terminal, To create a second service area; And setting a data path for providing the mobile service with the first node device and the second node device.

A method of driving a controller according to another aspect of the present invention is a method of operating a controller in cooperation with a node device that processes data and service information related to at least one mobile service among a multicast service and a broadcast service (MBS) Receiving a subscription request for providing the mobile service, and determining whether the mobile service according to the subscription request is the MBS already in service; Further determining whether the node device is a member device of a service zone providing the MBS if it is determined that the MBS service is already in service; Storing the identification information of the terminal and increasing the number of users of the node device for the MBS if it is determined that the node device is the member device.

A method of driving a controller according to another aspect of the present invention is a method of operating a controller in cooperation with a node device that processes data and service information related to at least one mobile service among a multicast service and a broadcast service (MBS) Receiving an unsubscription request for the mobile service and inspecting information of a service zone providing the MBS based on the unsubscription request; Decreasing the number of service users through the node device according to the inspection and determining whether the number of service users through the node device is '0'; Determining whether the total number of service users in the service zone is '0' if the number of service users through the node device is '0'; And changing the configuration of the service zone and excluding the node device from the member device for providing the MBS service if the total number of service users is not '0'.

A computer-readable medium having recorded thereon a program according to another aspect of the present invention determines whether a request service is active (Active) with respect to first and second terminals requesting a mobile service by accessing a mobile communication network, 2) determining whether the service requested by the terminal is already active in the mobile service transmission zone and is operating in the same service area as the first terminal; If the request service for the first terminal is not activated, generates a first service area for the first terminal, and if the second terminal is operating in the same service area as the first terminal, Expanding a region to create a second service area; And setting a data path for the first node device and the second node device and the mobile service.

According to the present embodiment, by changing the base station constituting the MBS zone dynamically according to the service subscription or withdrawal of the multicast service user, MBS can be provided even with a small amount of radio resources, It will be available to all MBS users in the MBS zone.

Also, when the MBS zone is composed of a plurality of base stations, the reception quality of the MBS can be increased by using macro diversity as in the fixed MBS zone.

1 is a diagram illustrating an MBS zone in IEEE 802.16e or IEEE 802.16m,
2 is a diagram showing an example of a system for mobile broadcast service according to an aspect of the present embodiment,
3 is a diagram illustrating an MBS information table of the controller of FIG. 2,
4 is a diagram showing an example of the structure of the controller of Fig. 2,
5 is a diagram showing an example of a broadcast service process of the system of FIG. 2,
Fig. 6 is a diagram showing an example of a method of driving the controller of Fig. 2,
Fig. 7 is a diagram showing another example of a method of driving the controller of Fig. 2;

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

FIG. 2 is a diagram illustrating an example of a system for a mobile broadcast service according to an aspect of the present invention, and FIG. 3 is a diagram illustrating an MBS information table of the controller of FIG. 2. Referring to FIG.

2, a system for a mobile broadcast service according to an aspect of the present embodiment includes a part or all of a terminal 200, a mobile communication network 210, a controller 220, and a content server 230 .

Here, the terminal 200 can be applied to various wired and wireless environments, and can be classified into a personal digital assistant (PDA), a cellular phone, a smart phone, and the like classified by terminal type, a PCS (Personal Communication Service) a Wideband CDMA (W-CDMA) phone, a CDMA-2000 phone, a Mobile Broadband System (MBS) phone, and an LTE (Long Term Evolution) phone. Here, the MBS phone is a terminal to be used in a next generation system currently being discussed. The terminal 200 may further include a desktop computer, a laptop computer, a netbook and a tablet PC, and a cloud terminal used under a cloud computing environment.

The terminal 200 includes a wireless communication module, a wireless LAN module, and a GPS module. The terminal 200 is connected to the mobile communication network 210 to perform normal voice or data communication with the other party, and when the mobile communication terminal 200 has an access point (AP) And is connected to the mobile communication network 210 to receive various web page data. Further, the terminal 200 receives the data provided through the GPS satellite in accordance with the GPS module.

The terminal 200 may be a wireless Internet protocol (WAP), an Internet Explorer (MIE) based on HTML using the HTTP protocol, a handheld device transport protocol (HDPT) And accesses the Internet via the mobile communication network 210 using the i-Mode of DoKoMo or a browser for wireless Internet access of a specific communication company. Of the Internet access protocols used in the terminal 200, the MIE uses m-HTML, which slightly reduces and modifies the HTML, and the i-Mode uses a language called compact HTML (c-HTML) do.

In order to provide a faster wireless Internet, a terminal 200 such as a recent smart phone uses a browser for wireless Internet access of a specific communication company such as an Opera Mini for iPhone, Wi-Fi and WiBro, which are communication networks, are also used to provide wireless broadband internet.

Further, the terminal 200 according to the present embodiment is connected to the service delivery network through radio resources allocated by the base stations (BTS A, BTS B, and BTS C). The terminal 200 requests the MBS service through the service delivery network or receives the MBS already provided in the MBS zone and displays the received MBS on the screen of the terminal 200. Here, the service delivery network is a network for connecting various servers necessary for the MBS. In addition to the content server 230 as shown in FIG. 2, various servers such as an authentication server and an EPG (Electronic Program Guide) You will be able to work together.

The mobile communication network 210 is an access network of a CDMA network, a WCDMA network, an EPC network, a GSM network, and an LTE (Long Term Evolution) network and a next generation mobile communication system to be implemented. The mobile communication network 210 is applicable to a cloud computing network in a cloud computing environment. For example, the WCDMA network may include a repeater (not shown), a Node B, an RNC (Radio Network Controller), a Mobile Switching Center (MSC) / Visitor Location Register (VLR), and a Serving GPRS Support Node (SGSN) . Here, the RNC plays a role of relaying a voice or data call between the Node B and the MSC / VLR or between the Node B and the SGSN. Of course, the NodeB and the RNC in the WCDMA network are respectively referred to as a BTS (Base Station Transmission System) and a BSC (Base Station Controller) in the case of a CDMA network. Also, the MME can be referred to as an evolved base station (e-NodeB) and a mobility management entity (MME) in an EPC (Evolved Packet Core) network. The MME is an integrated form of an RNC and an MSC / VLR in a WCDMA network. The role of the VLR is almost the same.

The serving base station, the first base station, and the first node device may be used in the same or similar concept for the sake of convenience of description, and the member base station, the second base station, and the second node The devices may be used with the same or similar concept to each other. However, if the first base station means that the user terminal 200 includes a base station that requests a service at its current location, the serving base station can notify the base station that the user terminal 200 is currently accessing the service It can be said to include.

The base stations BTS A, BTS B and BTS C shown in FIG. 2 are arranged in units of cells, for example, and are used for communication from the terminal 200 through a traffic channel, Receives the data request signal, for example, transmits the received call request signal to the BSC, or performs location registration for grasping the location of the terminal 200 existing in the cell region to which the terminal 200 belongs. In this manner, the base stations (BTS A, BTS B, and BTS C) know the location of the terminal 200 existing in its cell area, and then transmit a call request signal transmitted from the MSC through the BSC. The base stations (BTS A, BTS B, and BTS C) are network endpoint devices directly connected to the terminal 200, and perform baseband signal processing, wired / wireless conversion, and wireless signal transmission and reception.

In addition, the base stations BTS A, BTS B and BTS C can obtain information such as the location and latitude of the base station BTS A, BTS B, and BTS C using signals from the GPS satellites. To the terminal 200 through the system parameter message of the forward link paging channel. The terminal 200 may register the new location information by calculating the movement distance of the terminal 200 using the location information of the base stations (BTS A, BTS B, and BTS C) of the cell to which the terminal 200 belongs. Here, the location registration is a processing procedure for notifying the MSC of the location, state, identifier, slot period, and other characteristics of the terminal 200 via the base stations BTS A, BTS B and BTS C, B, and BTS C) can effectively call the terminal 200 when the terminal 200 desires to set a reception signal. The location registration of the terminal 200 is performed when the terminal 200 is powered on or off, when the terminal 200 moves between MSCs, and when the parameters of the terminal 200 are changed .

Further, the base stations (BTS A, BTS B, and BTS C) according to the present embodiment reserve a dedicated radio channel for transmitting multicast service data under the control of the controller 220, To the terminal (200).

The gateway 213 may represent, for example, a repeater, an RNC, a BSC, a GGSN or an MME in the mobile communication network 210. The gateway 213 performs data tunneling for service connection between the base stations (BTS A, BTS B, and BTS C) and the gateway 213. It also controls synchronization for multicast with one of the base stations (BTS A, BTS B, BTS C) in the service area. More specifically, the gateway 213 interworks with the serving base station 211_1 and the member base station 211_2 to provide an MBS synchronization rule, a data path registration or release request, a multicast distribution tree setting or release, a data path registration or release response, Channel resource allocation and release request, channel resource allocation and release response, and the like. Here, the setting or release of the distribution tree may mean a process of registering or deleting a multicast address according to a standard protocol standard, for example.

The controller 220 may be a closed user grop (CUG) service controller that provides mobile services, such as multicast / broadcast, to a limited number of users in a particular area. When providing data transmitted by a terminal 200 connected to a specific base station (BTS A, BTS B, or BTS C) to a content server 230 for MBS broadcasting located in a service delivery network, And manages the data transmission path used when transmitting the data to the terminal 200 located in the MBS zone. In this process, the controller 220 manages the multicast group and the user / service profile for providing this type of multicast / broadcast service in the wireless / mobile network environment, and controls the gateway 213 and the controller 220 ), And distributes service data and service information provided by the content server 230. Here, the service information may be information related to an identifier or an address of the content.

The controller 220 may generate a service area, or zone, according to its decision rule whenever a user provides a request to participate in a multicast service. At this time, the decision rule of the controller 220 may be variously configured according to the design purpose. If a zone is formed, the member base stations 211_2 can transmit multicast data to the users physically using the same multicast channel. When all the users using the member base station 211_2 do not use the multicast service, the member base stations 211_2 release the reserved multicast channel and leave the zone for the multicast service. When there is no member base station 211_2 belonging to the zone, the corresponding zone is deleted. The multicast transmission zone (MTZ) represents a group of base stations that can participate in the multicast service. The MTZ is designed with content synchronization in mind, and the zone is created only within the area of the MTZ. Where the zone is the service area for the multicast service and consists of one or more base stations called member base station 211_2.

Further, the controller 220 may include an MBS information table. The MBS information table may store various information related to the MBS zone identification value, the user identification value, the access node identification value, and the number of service users in the MBS zone member base station as shown in FIG. The stored information may be used when the controller 220 manages the multicast group for providing the MBS service or controls the service connection between the user and the controller 220 or between the gateway 213 and the controller 220 , And may be deleted or updated under the control of the controller 220.

The content server 230 stores various broadcast contents to be provided to users located in the MBS zone. The content server 230 provides the related content according to the request of the controller 220.

Fig. 4 is a diagram showing an example of the structure of the controller of Fig. 2;

Referring to FIG. 4 together with FIG. 2, the controller 220 includes some or all of the control unit 400, the activation determination unit 410, the service zone generation unit 420, and the routing unit 430.

The control unit 400 controls overall control of signals or information processed by the activation determination unit 410, the service zone creation unit 420, and the path setting unit 430. In the process, Can be performed.

The activation determination unit 410 determines whether the request service is already active for the first and second terminals, for example, requesting the MBS by accessing the mobile communication network 210. For example, It is further determined whether the requested service is already active in the MBS zone and is operating in the same service area as the first terminal. Here, the first terminal refers to the terminal of Tom in FIG. 2, but the second terminal can refer to the terminal of Alice or John. Thus, for example, if the second terminal represents a terminal, the third terminal will be Alice's terminal, and if the second terminal is Alice's terminal, the third terminal will be the terminal.

The service zone generating unit 420 generates a first service zone (ZONE 1) for the first terminal when the request for the first terminal is not activated as a result of the determination by the activation determining unit 410, When the terminal is operating in the same service area as the first terminal, it can expand the first service area (ZONE 1) to create a second service area (ZONE 2) of the new service area.

The path setting unit 430 sets a data path for the first base station 211_1 and the second base station 211_2 and the MBS.

Of course, in FIG. 4, all of the components are described as being combined or combined in one operation, but the present invention is not necessarily limited to such an embodiment. That is, within the scope of the present invention, all of the elements may be selectively coupled to one or more of them. 4, the activation determination unit 410, the service zone generation unit 420, and the path setting unit 430 may be configured to include a part of each component Or may be implemented as a computer program having a program module that performs some or all of the combined functions in one or a plurality of hardware. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program may be stored in a computer-readable storage medium, readable and executed by a computer, thereby implementing embodiments of the present invention. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

5 is a diagram showing an example of a broadcast service process of the system of FIG.

Referring to FIG. 5 together with FIG. 2, the terminal 200 accesses the mobile communication network 210 through an adjacent access node and requests the controller 220 to join or leave the multicast service S501). Here, the subscription assumes that the withdrawal is already participating in the service zone if it occurs, for example, to create the service zone for the first time.

In response to the service subscription or withdrawal request, the controller 220 determines to create, change, maintain, or delete the multicast service zone, and determines whether to join or leave the connection node (S503).

Then, the controller 220 performs a process of setting or releasing the multicast distribution tree with the gateway 213 (S505). Here, the controller 220 performs the process of setting up or releasing the distribution tree, which may mean a process of registering and deleting a multicast address according to a standard protocol standard.

Thereafter, the gateway 213 receives the multicast service zone creation, change, maintenance, and deletion notification from the controller 220 (S507). The controller 220 makes a data connection with the gateway 213 for transmission of the multicast service data.

The gateway 213 distributes its own synchronization rule to the serving base station 211_1 and the member base station 211_2 when receiving the creation, modification, maintenance, or deletion notification of the multicast service zone S509). Thereafter, the gateway 213 requests registration or cancellation of the data path between the serving base station 211_1 and the member base station 211_2 (S511).

The access node serving as the serving base station 211_1 and the gateway 213 perform a procedure for setting up and releasing the multicast distribution tree at step S513 and then the serving base station 211_1 registers the data path to the gateway 213 A response to the release is provided (S515). For example, when receiving the synchronization rule from the gateway 213, the serving base station 211_1 reserves a radio link according to the synchronization rule and makes a data connection with the gateway 213 for reception of the multicast service data will be.

Thereafter, the serving base station 211_1 receives a request for channel resource allocation or cancellation from the gateway 213 (S517), and the serving base station 211_1 allocates or cancels the multicast channel in response to the request S519).

The serving base station 211_1 requests the terminal 200 to establish or release a channel connection and receives a response to the request from the terminal 200 in step S521 and transmits a response to the channel resource allocation or release to the gateway 213 (S523).

The controller 220 relays the multicast service data from the content server 230 and provides the multicast service data to the terminal 200 through the gateway 213 and the access node in steps S525 and S527.

Referring to FIG. 5 together with FIG. 2, the above process will be described in more detail with respect to each user.

The terminal 200 of the user Tom is connected to the first base station 211_1 to access the mobile communication network 210. [ The Tom's terminal 200 provides the controller 220 with a request to join the multicast service with the identifier or identification of the first base station 211_1.

After receiving the request for the multicast service, the controller 220 forms a first service area (ZONE 1) according to its decision rule. Then, the controller 220 generates an information table including identification information on the first service area, the first base station 211_1, and the user terminal 200. And sends a notification to the gateway 213 about the creation of the first service area. Accordingly, the controller 220 makes a data connection to the gateway 213 for transmission of the multicast service data.

Upon receiving the notification of the configuration of the first service area from the controller 220, the gateway 213 distributes the synchronization rule to the member base station of the first service area, i.e., the first base station 211_1, And data is connected to the first base station 211_1 for service data transmission.

When receiving the synchronization rule from the gateway 213, the first base station 211_1 of the first service area reserves the radio link according to the synchronization rule, and the first base station 211_1 transmits the multicast service data to the gateway (213) and the user terminal (200).

The controller 220 relays the multicast service data provided from the content server 230 to the gateway 213 and if the multicast service data is received the gateway 213 transmits the multicast service data to the first base station 211_1, The time for transmitting the multicast service data at the same time is determined. The multicast data is then transmitted to all member base stations in the first service area.

If the multicast service data is received from the gateway 213, the member base station transmits data in its own cell coverage, and the terminal 200 on the user's side includes the multicast service data transmitted by the member base station Signals.

The terminal 200 of the new user Alice may be connected to the first base station 211_1 and may access the mobile communication network 210. [ In this case, Alice's terminal 220 transmits a request to join the multicast service to the controller 220 with the identification information of the first base station 211_1.

After receiving the request for the multicast service, the controller 220 adds Alice's terminal 200 to the first service area according to its decision rule. And provides notification to the gateway 213 about maintenance of the first service area. Upon receiving the notification of the maintenance of the first service area from the controller 220, the gateway 213 transmits a request for establishing a wireless channel between the base station and the user to the first base station 211_1. Upon receiving a request for setting a wireless channel from the gateway 213, the first base station 211_1 reserves a wireless link and makes a data connection to the user Alice's terminal 200 for receiving the multicast service data.

Accordingly, the terminal 200 of Alice receives the signal including the multicast service data transmitted by the first base station 211_1.

The terminal 200 of another user John is connected to the second base station 211_2 to access the mobile communication network 210. [ The terminal 200 transmits a request to join the multicast service to the controller 220 with the identification information of the second base station 211_2.

After receiving the request for the multicast service, the controller 220 adds the mobile terminal 200 and the second base station 211_2 to the first service area according to its decision rule. At this time, the first service area is replaced with a second service area including a first base station 211_1 and a second base station 211_2, which are new member base stations. The controller 220 also provides a notification to the gateway 213 about the configuration of the second service area. And data is connected to the gateway 213 for transmission of the multicast service data.

Upon receiving the notification of the configuration of the second service area, the gateway 213 distributes the synchronization rule to the first and second base stations 211_1 and 211_2, which are the member base stations of the second service area. And transmits a setup request of the wireless channel between the base station and the user. Then, a data connection is made to the second base station 211_2, which is a new member base station for transmission of the multicast service data.

The first and second base stations 211_1 and 211_2, which are the member base stations of the second service area, reserve the radio link according to the synchronization rule and transmit the radio link to the terminal 200 And makes data connection to the second base station 211_2 for reception of the multicast service data. The first and second base stations 211_1 and 211_2, which are new member base stations, are connected to the gateway 213 for receiving multicast service data.

For example, when the multicast service data provided from the content server 230 is received from the controller 220, the gateway 213 transmits the multicast service data to the first and second base stations 211_1 and 211_2, which are all the member base stations in the second service area, .

If the first and second base stations 211_1 and 211_2 receive the multicast service data, the first and second base stations 211_1 and 211_2 transmit corresponding data in their cell coverage. And receives signals including multicast service data transmitted by the mobile stations 211_1 and 211_2.

FIG. 6 is a diagram showing an example of a driving process of the controller of FIG. 2, illustrating a case where a subscription of a multicast service is requested from a terminal.

Referring to FIG. 6 together with FIG. 2, the controller 220 receives a request for multicast service subscription from the terminal 200 (S601). To this end, the terminal 200 is connected to a neighboring access node to access the mobile communication network 210.

Upon receiving the service request from the terminal 200, the controller 220 determines whether it is a request for the multicast service already in service (S603).

As a result of the determination, if it is a request for a multicast service already in service, it is further determined whether the connected access node is a member base station of the current multicast zone (S605).

If it is determined to be a member base station, the controller 220 additionally stores user identification information in the multicast service zone information table (S607).

Thereafter, the controller 220 increases the number of multicast service users of the access node (S609).

If it is determined in step S605 that the access node is not a member base station, the controller 220 determines whether the access node is a multicast service zone and a node belonging to the multicast transmission area (MTZ) (S611).

If it is determined to be a node belonging to the multicast transmission region, the controller 220 further stores the identification information of the access node and the identification information of the user in the multicast service zone information table (S613), and performs step S609 do.

On the other hand, if it is determined in step S603 that the request is not a request for a multicast service already in service, or if it is determined in step S611 that the node is not a node belonging to the multicast transmission area (MTZ), the controller 220 configures a new multicast zone , And creates a multicast service information table (S621). At this time, the information table includes the multicast service zone, the access node, and the identification information of the user.

FIG. 7 is a diagram showing another example of the driving process of the controller of FIG. 2, illustrating a case where a terminal requests a multicast service withdrawal.

Referring to FIG. 7 together with FIG. 2, the controller 220 receives a multicast service withdrawal request from the terminal 200 (S701).

If there is such a request for leaving, the controller 220 checks the corresponding multicast service zone information (S703), thereby reducing the number of service users through the access node (S705).

In response to such a decrease, the controller 220 determines whether the number of service users through the corresponding access node is '0' (S707).

If it is not 0, the controller 220 maintains the configuration of the multicast service zone as it is (S709). However, when the number of service users is 0, the controller 220 determines whether the total number of service users through the multicast service zone is '0' (S711).

If the total number of service users is 0, the controller 220 deletes the multicast service zone and terminates the process (S713). If the total number of service users is not 0, the controller 220 changes the configuration of the multicast service zone (S715) The access node is excluded from the member base station of the multicast service zone and the corresponding process is terminated (S717).

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

The terms "include", "comprise", or "have" in the specification do not exclude other components, unless the context clearly indicates otherwise. But should be construed to include other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The embodiments of the present invention are applicable to a system and method for a mobile broadcast service, a method of driving a controller and a controller, and a computer-readable medium on which a program is recorded. According to the present embodiment, It is possible to provide the MBS to all the MBS users in the MBS zone even with a small amount of radio resources as compared with the method of constructing the multicast service area in a fixed form by dynamically changing the service user's service subscription or withdrawal. Also, when the MBS zone is composed of a plurality of base stations, the reception quality of the MBS can be increased by using macro diversity as in the fixed MBS zone.

200: terminal 210: mobile communication network
213: Gateway 220: Controller
230: Content server 400:
410: activation determination unit 420: service zone generation unit
430: Parameter allocation unit 440: Path setting unit

Claims (22)

A system for a mobile broadcast service comprising a content server providing data and service information related to at least one of a mobile service of multicast and broadcast service (MBS)
A node device for reserving a Dedicated Wireless Channel for transmitting data according to the request to the user requesting the mobile service and transmitting the multicast data using the dedicated wireless channel;
Performs data tunneling for connection of the MBS with the node device, requests establishment or release of connection of a wireless channel between the node device and the user's terminal, A gateway for controlling data synchronization of the node device in the node device; And
A service connection between the node device and the gateway for transferring the data, a profile of a user and a service of the group of the node device, and managing the at least one of the data from the content server and the service information To the gateway,
Wherein the service zone comprises only base stations with user requests for the at least one mobile service and is formed based on at least one of a location and a number of terminals requesting the at least one mobile service. Systems for services. The method according to claim 1,
The node device interlocking with one or more terminals,
Wherein the terminal receives the multicast data according to a request of the mobile service. 3. The method of claim 2,
Wherein the profile of the user includes information related to the terminal, and the profile of the service is information related to change, maintenance, or deletion of the service zone. The method according to claim 1,
Wherein the controller manages a group of the node devices by increasing or decreasing the number of the node devices in the service zone. The method includes determining whether a request service is active for a first terminal and a second terminal requesting a mobile service by accessing a mobile communication network and determining whether a service requested by the second terminal is a mobile service transmission zone, An activation determining unit operable to determine whether the first terminal is already operating in the same service area as the first terminal,
The first terminal generates a first service area for the first terminal if the request for the first terminal is not activated as a result of the determination of the activation determining unit and the second terminal is operating in the same service area as the first terminal A service zone generating unit for expanding the first service area to generate a second service area; And
A first node device and a second node device, and a path setting unit for setting a data path for the mobile service,
Wherein the service transfer zone comprises only base stations with a user request for at least one mobile service and is formed based on at least one of a location and a number of terminals requesting at least one mobile service. . 6. The method of claim 5,
Wherein the mobile service transmission zone is an area for providing the multicast service by forming the first node device and the second node devices capable of participating in the multicast service as a group in a multicast service transmission zone (MTZ) Features a controller. 6. The method of claim 5,
Wherein the first node device and the second node device use the same physical channel to provide data of the mobile service to the first terminal and the second terminal, respectively. A method for mobile broadcast service in a system comprising a node device, a gateway, a controller and a content server for processing data and service information associated with at least one of a mobile service of multicast and broadcast service (MBS)
The node device reserving a dedicated wireless channel for transmitting data according to the request to the user requesting the mobile service and transmitting the multicast data using the dedicated wireless channel;
The gateway performs data tunneling with respect to the connection of the MBS with the node device and requests establishment or release of connection of a wireless channel between the node device and the user terminal, Controlling synchronization of data of the node device in a zone; And
Wherein the controller manages at least one of a service connection with the gateway for communicating the data, a group of the node device and a profile of the user and the service, And distributing the service information to the gateway,
Wherein the service zone comprises only base stations with user requests for the at least one mobile service and is formed based on at least one of a location and a number of terminals requesting the at least one mobile service. Methods for Services. A method for mobile broadcast service in a system comprising a node device, a gateway, a controller and a content server for processing data and service information associated with at least one of a mobile service of multicast and broadcast service (MBS)
Wherein the controller receives the request from a user requesting subscription or withdrawal of the mobile service and decides to create, modify, maintain or delete a service zone in which the MBS is performed according to the request, ;
The controller performs a tree setup or release for the distribution of the gateway and the MBS, and notifies the gateway of creation, modification, maintenance, or deletion of the service zone;
The gateway transmits a synchronization rule related to the MBS to the node device, performs a tree setup or release for distribution of the node device and the MBS, and registers or releases a data path to the node device, Requesting allocation or release of channel resources to register or release the data path and receiving a response to allocation or release of the channel resources;
The node device allocating or releasing the channel resource for the MBS, requesting the user terminal to establish or release a channel connection, and receiving a response to the channel connection setup or release request; And
The controller relaying and delivering the data to be provided to the terminal, the data being provided from the content server,
Wherein the service zone comprises only base stations with user requests for the at least one mobile service and is formed based on at least one of a location and a number of terminals requesting the at least one mobile service. Methods for Services. A method for mobile broadcast service in a system comprising a node device, a gateway, a controller and a content server for processing data and service information associated with at least one of a mobile service of multicast and broadcast service (MBS)
The controller generates a first service zone (ZONE 1) based on a determination rule upon receiving a request for the MBS from the first terminal, and transmits a notification of creation of the first service area to the gateway ;
The gateway distributing a synchronization rule to the first node device upon receiving the notification of creation of the first service area and accessing the first node device for transmission of the data; And
When the first node device receives the synchronization rule, reserving a wireless link according to the synchronization rule and accessing the gateway for reception of the data,
Wherein the first service area comprises only base stations with user requests for the at least one mobile service and is formed based on at least one of a location and a number of terminals requesting the at least one mobile service A method for mobile broadcast service. 11. The method of claim 10, wherein transmitting to the gateway comprises:
Further comprising the step of the controller generating an information table including identification information of the first service area, the first node device and the first terminal after creating the first service area, Method for broadcasting service. 11. The method of claim 10,
And adding the second terminal to the first service zone (ZONE 1) based on the determination rule when the controller receives a request for the MBS from the second terminal. Methods for Services. 13. The method of claim 12,
When the controller receives a request for the MBS from the third terminal, the controller adds a second node device connected to the second terminal and the third terminal to the first service area based on the determination rule, Creating a second service area including a node device and the second node device;
The controller providing a notification to the gateway of the configuration of the second service area;
Distributing the synchronization rule to the first node device and the second node device when the gateway receives the notification of the configuration of the second service area; And
Wherein the first node device and the second node device, when receiving the synchronization rule, reserve a radio link according to the synchronization rule and connect to the gateway for reception of the data. Method for broadcasting service. The mobile terminal determines whether a request service is active for a first terminal and a second terminal requesting a mobile service by accessing a mobile communication network and determines whether a service requested by the second terminal is in a mobile service transmission zone Further determining whether the terminal is already active and operating in the same service area as the first terminal;
If it is determined that the request service for the first terminal is not activated, a first service area is created in the first terminal. If the second terminal is operating in the same service area as the first terminal, To create a second service area; And
And establishing a data path for providing the mobile service with the first node device and the second node device,
Wherein the service transfer zone comprises only base stations with a user request for at least one mobile service and is formed based on at least one of a location and a number of terminals requesting at least one mobile service. . A method of operating a controller in cooperation with a node device for processing data and service information related to at least one mobile service among multicast and broadcast service (MBS)
Receiving a subscription request for the mobile service provided by the terminal and determining whether the mobile service according to the subscription request is the MBS already in service;
Further determining whether the node device is a member device of a service zone providing the MBS if it is determined that the MBS service is already in service;
Storing the identification information of the terminal and increasing the number of users of the node device for the MBS if it is determined that the node device is the member device,
Wherein the service zone comprises only base stations with user requests for the at least one mobile service and is formed based on at least one of a location and a number of terminals requesting the at least one mobile service. Driving method. 16. The method according to claim 15,
Determining whether the node device belongs to the same multicast transmission zone (MTZ) as the service zone if it is determined that the node device is not the member device; And
And if the node device is a node device belonging to the MTZ, storing identification information of the node device and the terminal, and increasing the number of users of the node device for the MBS . The method as claimed in claim 16,
Generating a new service zone and increasing the number of users of the node device for the MBS if it is determined that the MBS is not already in service or is not a node device belonging to the MTZ, . 18. The method of claim 17,
Wherein the step of generating the new service zone further comprises the step of generating an information table for storing the identification information for the new service zone, the node device and the terminal. A method of operating a controller in cooperation with a node device for processing data and service information related to at least one mobile service among multicast and broadcast service (MBS)
Receiving an unsubscription request for the mobile service provided by the terminal and inspecting information of a service zone providing the MBS based on the unsubscription request;
Decreasing the number of service users through the node device according to the inspection and determining whether the number of service users through the node device is '0';
Determining whether the total number of service users in the service zone is '0' if the number of service users through the node device is '0';
Changing the configuration of the service zone and excluding the node device from the member device for providing the MBS if the total number of service users is not '0'
Wherein the service zone comprises only base stations with user requests for the at least one mobile service and is formed based on at least one of a location and a number of terminals requesting the at least one mobile service. Driving method. 20. The method according to claim 19,
Further comprising the step of maintaining the configuration of the service zone if the service user is not '0' through the node device. 20. The method according to claim 19,
And deletes the service zone if the total number of service users through the service zone is '0'. The mobile terminal determines whether a request service is active for a first terminal and a second terminal requesting a mobile service by accessing a mobile communication network and determines whether a service requested by the second terminal is in a mobile service transmission zone Further determining whether the terminal is already active and operating in the same service area as the first terminal;
If the request service for the first terminal is not activated, generates a first service area for the first terminal, and if the second terminal is operating in the same service area as the first terminal, Expanding a region to create a second service area; And
Establishing a data path for the mobile service with the first node device and the second node device,
Wherein the service transfer zone includes only base stations with user requests for at least one mobile service and is configured to execute a process based on at least one of a location and a number of terminals requesting at least one mobile service, A computer readable medium having recorded thereon.

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